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參數(shù)資料
| 型號： | STV8277 |
| 廠商： | 意法半導體 |
| 英文描述： | Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders |
| 中文描述： | 數(shù)字音頻解碼器/處理器為A2和麗音電視/錄像機 |
| 文件頁數(shù)： | 20/149頁 |
| 文件大?。?/td> | 2775K |
| 代理商： | STV8277 |
System Clock
STV82x7
20/149
2
System Clock
The System Clock integrates 2 independent frequency synthesizers.
The first frequency synthesizer can be used in one of two modes:
●
In Mode 1, it is used by the demodulator, and the frequecy is 49.152 MHz.
●
In Mode 2, it is used by the I2S input and is synchronous with the input frequency
(f
S
= 32, 44.1
or 48 kHz) and the frequency is 49.152 MHz (for f
S
= 32 or 48 KHz) or 45.1584 MHz (for f
S
=
44.1 KHz).
The second frequency synthesizer is used by the DSP core and can be adjusted between 100 and
150 MHz depending on the application (around 106 MHz at reset value).
The default values are designed for
a standard 27-MHz reference frequency
provided by a stable
single crystal or an external differential clock signal (for example, from the STV35x0) depending on
the CLK_SEL pin configuration (CLK_SEL = 1 means a single crystal, 0 means an external
differential clock). The 27-MHz value is the recommended frequency for minimizing potential RF
interference in the application. The sinusoidal clock frequency, and any harmonic products, remain
outside the TV picture and sound IFs (PIF/SIF) and Band-I RF.
Note:
A change in the reference frequency is compatible with other default I2C programming values,
including those of the built-in Automatic Standard Recognition System.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| STV8277D | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders |
| STV8277DSX | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders |
| STV8277DSXT | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders |
| STV8277DT | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders |
| STV8277T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders |
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